13-mc-0573.log washers brochure - mclanahanlog washers can effectively remove up to roughly 15...
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LOG WASHERS
mclanahan.com
Eliminate out of spec products contaminated with clay, silts and other deleterious materials by using the McLanahan Log Washers. Used around the world for washing gravel,cemented aggregates, limestone, phosphate and various ores, McLanahan Log Washers have setthe standard by which all others are measured. These high quality, highly durable machines perform well under the toughest clay conditions with minimum power, water and downtime.
Feed material is normally delivered between two to four feet from the feed end of the box and issubjected to an aggressive washing action resulting from the intermeshing paddle design. The paddles perform two functions: they help convey material and are the catalyst for material on material scrubbing. The clean material works uphill, between the shafts, and is discharged out thebottom of the box after a final rinse from the spray bar. Deleterious materials are absorbed into thewater and carried over a weir on either side of the box. A rising current system helps lift waste fractions to the top of the water level and over the weir. The length of the washer box is dependentupon the percentage and tenacity of clay or the waste to be removed.
Log Washers can effectively remove up to roughly 15 percent clay and deleterious materials in thefeed. In order to maximize the scrubbing action, McLanahan recommends that the minus 1/4" (6mm) fines, which tend to act as a cushion, be screened out prior to the Log Washer.
LOG SHAFTSThe correct log and paddle design, which McLanahan has developed through years of experience, is fundamental to cleaning large tonnages with less power and less water. The McLanahan logshafts are designed to be highly resistant to twisting, bending, misalignment and other damage.
The logs are fabricated from extra-heavy one-piece steel pipe which is flanged at both ends to facilitate maintenance. After the paddle bases are welded, the log shafts are straightened to less than .010" (.25mm) run-out at the bearing locations. This straightening process provides for maximum bearing, shaft and gear reducer life.
A wear collar (standard on all McLanahan Log Washers) is utilized at the feed-end flanged connection to protect the hardware from wearing away during operation.
BOX CONSTRUCTIONEach McLanahan Log Washer is fabricated from large sheets of heavy steel plate to minimizewelded seams. The bottom of the washer box is reinforced for additional strength and rigidity. The sides of the box are gusseted and braced and the top is flanged to further strengthen the design and provide maximum stability. This eliminates undue vibration and ensures years of trouble-free service.
DRIVESAll McLanahan Log Washers employ a V-belt driven, single input, dual output gear reducer, which can be uncoupled from the log shafts and frame for maintenance. The reducer utilizes helical gearing that incorporates 50 percent more horsepower capacity than conventional spur gear design reducers. Internal spherical roller bearings have a minimum B10 life exceeding140,000 hours. Overall, this drive utilizes superior materials to improve the operational performance of McLanahan Log Washers.
V-Belt Drive
Box Construction
Wear Collar
Log Shaft
McLANAHAN OFFERS PARTS AND SERVICE24 HOURS A DAY, EVERY DAY!
SLOPE ADJUSTMENTOperating slopes vary from 1-1/2" to 3" (38mm to 76mm) per foot, depending upon the tenacity ofwaste to be removed. Log Washers should be run at minimum slope to reduce parts wear, powerconsumption and maximize capacity. Standard slope adjustment uses a trunnion support at thecenter bottom of the washer box. For more frequent changes in slope, adjustable support bracketscan be furnished at each of the four corners where two screw jacks provide for a quick change.
CLEAN-OUT GATESAvailable clean-out gates speed up the process of emptying material from the box for maintenanceor end-of-season procedures.
STRAIGHT VERSUS SPIRALGo straight to profitable production. McLanahan still manufactures Log Washers with both straightand spiral rows of paddles (and has for decades), but believes that shafts with straight rows of paddles are the most beneficial design for producers because more horsepower is transmitted toscrubbing action. Material must work harder to climb up the slope of the box, thereby increasingthe washing action. The spiral action of paddles helps convey material too much, cushioning thewashing action.
SPRAY BARSAll McLanahan Log Washers come standard with a center spray bar to provide a final rinse beforematerial is discharged from the box. The use of a rinse or wash screen following the Log Washer isrecommended to ensure that any residual coatings and/or films are removed.
PADDLESStandard on all McLanahan Log Washers is the McL5X paddle that was designed to optimize thecombination of hardness and ductility to maximize abrasion resistance. This specially developedfine grain steel is subjected to a proprietary water quench process that produces a minimumthrough hardness of 500 Brinell (BHN) while maintaining its tensile strength. McL5X will not breakduring shipment or crack during installation and the design reduces the coefficient drag during operation. Each McL5X paddle is secured to the paddle base with two bolts, each equipped withtwo nuts for positive locking.
Clean-Out Gate
Slope Adjustment
Spray Bars
Paddles
Straight Row Paddles Spiral Row Paddles
NORTH AMERICA CORPORATE OFFICE Pennsylvania, USA +1 (814) 695 9807 [email protected]
Florida, USA +1 (863) 667 2090 [email protected]
Iowa, USA +1 (319) 365 0441 [email protected]
Tennessee, USA +1 (615) 451 4440 [email protected]
AUSTRALIA New South Wales +61 2 4924 8248 [email protected]
Queensland +61 7 4952 3377 [email protected]
EUROPE England, UK +44 (0) 1420 542489 [email protected]
INDIA Hyderabad +91 (40) 2355 4071 [email protected]
Guards are recommended for safe operation of equipment. In some photos, safety guards may not be shown. LW 1/2014
SUBMERGED BEARINGSChanging a “boot” every season? Tired of leaky bearings that lead to catastrophic failure? Then useMcLanahan Twin-Seal Pak submerged rear bearings, which are standard on all washing equipment.This design incorporates Duo-Cone® seals that keep water and even the smallest particles fromreaching the bearing. Pressure in the bearing housing is maintained between the seals to provideconstant seal face lubrication and a weep hole eliminates any possibility of seal damage from overgreasing. A plunger in the grease cup even lets you know how much grease is in the bearing sealcavity. The roller bearing is mounted outboard, so it can be removed for easy maintenance. Duo-Cone® is a registered trademark of Caterpillar Inc.
McLANAHAN X-TREME LOG WASHERNeed to process 500 TPH of material in just one machine? Use the McLanahan X-Treme LogWasher that incorporates extra heavy-duty paddle bases, extra motor Horsepower, extra clean outgates and overall lower operating slope. Consult with your McLanahan Regional Sales Managertoday to see if the X-Treme Log Washer can be used on your application.
Grease Cup
Retaining Plate
End Cover
Bearing
Seal Ring
Weep Hole
Lower Gudgeon
Seal Mounting Ring
Seals
Flinger
Bearing Housing